元: the lower back, inner thighs, and inner legs just below the knees.L2: the lower back, hips, and tops of the inner thighs.L1: the groin, upper hips, and lower back.T11 and T12: the lower abdomen and mid-back.T10: the midline of the abdomen and the mid-back.T8 and T9: the upper abdomen and mid-back.T2, T3, and T4: the upper chest and back.T1: the upper chest and back and upper forearm.C8: the upper back, inner arms, and ring and pinky fingers.C7: the upper back, backs of the arms, and middle fingers.C6: the upper forearms and the thumbs and index fingers.C5: the upper shoulders and the two collarbones.C3: the back of the head and the upper neck.C2: the base of the skull, behind the ear.Some dermatomes overlap to a certain extent, and the precise layout of the dermatomes can vary slightly from one person to the next.īelow, we list the locations of the dermatomes that correspond to the spinal nerves in each group. Each dermatome shares the label of its corresponding spinal nerve.
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